Show Clinch, Rails and Ruby versions in sidebar footer; bump to 0.11.0

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app/views/shared/_sidebar.html.erb

@@ -115,6 +115,10 @@
               </li>
             </ul>
           </li>
+
+          <li class="mt-auto pt-4 border-t border-gray-200 dark:border-gray-700">
+            <%= render "shared/version_info" %>
+          </li>
         </ul>
       </nav>
     </div>
@@ -233,6 +237,10 @@
                 <% end %>
               </li>
             </ul>
+
+            <div class="mt-6 pt-4 border-t border-gray-200 dark:border-gray-700">
+              <%= render "shared/version_info" %>
+            </div>
           </nav>
         </div>
       </div>